Stop start works for 1-2 weeks after recharging
On my 2016 c63s I recharge the AMG and stop start works for about 1-2 weeks then it stops kicking in, green A symbol doesn't come up.
I tested battery voltage during idle and during startup and it's fine when stop start isn't working. I find it I do a few short trips that's when stop start doesn't work anymore afterwards.
What could it be? No errors with Carly.
Thanks,
On my 2016 c63s I recharge the AMG and stop start works for about 1-2 weeks then it stops kicking in, green A symbol doesn't come up.
I tested battery voltage during idle and during startup and it's fine when stop start isn't working. I find it I do a few short trips that's when stop start doesn't work anymore afterwards.
What could it be? No errors with Carly.
Thanks,
I don't use it anyway but interested to know what causes it.




Are you in comfort mode when this happens? If I remember correctly the *** light goes amber and does not work if I'm not in sport+, I might have remembered wrong though since auto start stop is the first thing I turn off after starting my car.
Are you in comfort mode when this happens? If I remember correctly the *** light goes amber and does not work if I'm not in sport+, I might have remembered wrong though since auto start stop is the first thing I turn off after starting my car.
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Now how often we need to change the aux capattery I have no idea.
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I'm thinking the battery is old, I've only owned the car 2 months, so I suppose the person before me didn't replace it in the last 4 years.




Varta AGM F21 is the OEM battery for our cars.
Last edited by Jimmy_c63s; Nov 20, 2022 at 12:50 PM.




